[Mailman-Users] Microsoft blocking our Mailman lists
Stephen J. Turnbull
turnbull.stephen.fw at u.tsukuba.ac.jp
Sun Oct 7 13:36:23 EDT 2018
Lindsay Haisley writes:
> hotmail-com.olc.protection.outlook.com [126.96.36.199]:
> >>> MAIL FROM:<aftm-bounces+clarkson-66=hotmail.com at lists.fmp.com>
> BODY=8BITMIME SIZE=5492
> <<< 550 5.7.1 Unfortunately, messages from [188.8.131.52] weren't
> sent. Please contact your Internet service provider since part of their
> network is on our block list (S3140). You can also refer your provider
> to http://mail.live.com/mail/troubleshooting.aspx#errors.
> Has anyone seen similar problems recently with Microsoft mail customers
> who are Mailman list subscribers?
Yes, I've seen a similar problem. I was actually the source for a bit
of spam (backscatter from attempted subscriptions, fortunately those
lists don't need to be open subscription so I just blocked them all
with action DISCARD).
However, in my case it was specific to my IP, I was able to go to
their website and enter my IP into a "I won't do it again" page, and
after about 48 hours, mail was flowing again. YMMV.
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